Knowledge management (KM) and Knowledge Management Systems (KMS) are not new. With the rise of the Internet, distributed and increasingly social technology, the management principles as well as the tools supporting KM also start to address small and medium-sized enterprises (SME). Todays SMEs are increasingly required to manage knowledge assets in order to sustain their position on the competitive forefront in agile markets. This paper investigates the current state of the art on computer-based KMS (or KM tools as we call them) and commercial KM tools in order to harmonize the picture, derive a joint feature and application system scope and finally inspire future design-oriented research by unveiling gaps. It shows that recent SME-related KM tools do not address KM in a holistic managerial way, fail to link operative data sources such as ERP and CRM, lack effective reward and enabling processes to more quickly establish a knowledge sharing culture amongst SME employees. The main objective of the paper is to inform future design-oriented research.